Device for steam-boilers.



L. B H'ANKISON & W. E. STUMM; DEVICE FOR STEAM BOILERS. APPLICATIONFILED JULY 8. 1911.

1,021,597, Patented Mar. 535, 1912.

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L. E. HANKISON & W. E. STUMM. DEVICE .FOR STEAM BOILERS. APPLICATIONFILED JULY 8, 1911. 1,021,591 Patented Mar. 26,1912.

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UNITED "STATES PATENT] OFFICE. LEWIS, E, HANKISON 42m mm 1i. s'rtmm, orcommsmne, rsxnsrnvmm.

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To all whom it may Be it known. that we',; IlEWIs E. Harman SON andWmnmn E. STUMM, citizens of the United States, residing atConnellsville, in the county of Fayette and State of Pennsylvania, haveinvented new' and useful Improvements in Devices for Steam-Boilers, of.

Specification of Letters Patent. Application filed July 8, 1911.Serialll'o. 837,56

vision is made for the protection ofthe' water legsof'water tubeboilers,and for cleaning deposits of combustion from the lower bank oftubes, e

As is well-known to those acquainted with the art, the lower row oftubing in a water tube boiler when in use, becomes coated with theproducts of combustion so that the efficiency of theboiler is greatlyreduced because the heat of the furnace passes up through the tubeswithout coming int conheat the waterthe tubes causes a deficiency in thecapacity of the Furthe deposit upon the lower tubes has a tendon toretain or confinee the heat at the wal s of the furnace, thus causing aportion of the heat to radiate thl'bllgh said walls, burning out ordestroying the latter. p

' n the resentinstanoe, it is our purpose to provid means which may beinstalled between the water leg of the boiler and back wall of the'boiler setting whereby access may be had to the bank 0 tubing, throughdoors or openings, sothat such tubing may be scraped or cleaned throughthe medium of a' tool designed for this purpose, the cleaning being donewhile the boiler is in service,

thus attaining economy in time, labor and 'boiler 11 e.

Itis 3150 our intention to provide a device to protect the water legfrom corrosion, inasmuch, as by means of our invention the water legissupported some, distance above the boiler setting, thus keeping moisturetact therewith and byffailing to properly.

' furnace itself are Patented Mar. 26, 1912.

from the bottom of the legs,'and thereby avoiding corrosion of thelatter.

Furthermore, by means of our invention, the boiler setting, furnacecastings and the reserved from injury, inasmuch, as by allbwing of theready and frequent cleaning of the tubes, the heat will follow itsnatural course through the bank oftubing to its outlet, instead of beingeon fined in the lower portion of the furnace by tubes clogged or packedwith the deposit of soot and other products of combustion. While we havein the present instance shown and described by way of illustration,

one applicationof our invention to an ordinary type of water tubeboiler, we wish it to be understood that we do not limit the inventionto-this useful application, as it our invention. Fig. 3 is a perspectiveview,

of the assembled device. Fig. 4 is .a-vertical cross sectional view,taken on the line-H of Fig. 1, lookingfin the direction of the arrows,the cleaning rod bein omitted.

Briefly stated, the-preferred form of our invention is made in the formof a box-like member, comprising a series of sections adapted to beassembled as is shown in Fig. 3 of the drawings, and to be installedbetween the wall 0 the boiler setting and the adjacent water leg, as isshown in Fig. 1;" it being understood that the device, which is made ofmetal may be attached as a new art of a boilerwlten manufactured or maye manufactured and installed after the I the blow-off pipes.

boiler is in place.

to accommodate the rivets and blow-off pipes on the bottom of the waterlegs, this construction enabling the device to be installed beneath thewater legs without removing Furthermore, the structure is preferablyformed with a series of doors which may be'opened to permit theinsertion of'a scraper rod or other tool for removing a,deposit from theboiler; as is shown in Fig. 1.

Referring now to the accompanying drawings in detail, and particularlyto Fig.1,

the numeral 1 designates the bridge wall of the furnace and 2 the gratethereof. Above the grate and bridge wall is the usual arch 3 while thebank 0 water tubes isshown at 4, the baliies thereof being indicated at5-5, while G'indicates a portionof the drum of the boiler. In thepresent instance, we have shown the invention. as applied beneath therear water leg of'the boiler, which is shown at 7,'the back wall settingbeing indicated at 8, the top of saidwall being stepped as shown at 9.

ling rearw; :d from vertical side walls 14, curved or recessed as at 15for the reception *of' the rivets and Our invention comprises in itspreferred form a number of block-likecastings -10-10 adapted to beplaced end-to-end, as is shown in'Figs. 2 and 3, although we wish it tobe understood that the device may-be cast or otherwise made'in onepiece, if desired. As

all of the sections are similar in construction, a description of onewill'suflice foriall;

Each section comprlses a front plate 11 having elongated openingstherein desi ed to be covered'by small end doors 13. xtend the frontplate are the blow-off devices on the bottom of the water legs. lhetumeral 16 indicates the base of the section of the casting-which isstepped as at 17 to fit into the corresponding steps 9 at the top of theback wall of the boiler setting, as is shown in Fig. 1. It willbeunderstood that the vertical walls or partitions 14 of the block-likecastings are suitably spaced apart to permit the free entry of theclean-- that the cleaning tool T may have free entry to the lower row ofboiler tubes.

This member is prefer-- ably formed of sect-ions or castings'ih orderlaced in contact end-to-end to 'From the above description, taken. inconnection with the accompanying drawings,

the construction and purpose of our invention will be readily apparentto those atquainted with theconstruction of steam boilers and steamboiler furnaces By forming the bottom of the device of step-upconstruc-' tion', it acts as a stay for strengthening the v supportingpartition:

In the case of new boilers our invention may be formed as a art of thesame, while in boilers that have een already installed, it may beemployed by removing a portion ofthe wall and inserting the device.

Furthermore, we wish it to be understood that we do not limit ourselvesto applying the inventionbetween the water 'legan the setting as such 'adevicemay be applied under any" conditions where it is desired toprotect from corrosion a part of a boiler that V receives its supportfrom a setting. 3

As before stated, in addition to affording a means to attaining accessto a tube to clean device for protecting the water'le .or other parts ofa boiler from contact wit the leakage water and the like, and we regardthis the same, our invention forms a very efiicientas animportant-feature of our invention.

Furthermore, we wish it to be understood that we do not limit ourselvesto all the precise details of construction herein set forth,

as modification and'variation may be made without departing from thespirit of'the invention or exceedmg the scope of the claims.

1. The combination with a furnace and a tubular boiler, of meansinterposed between the boiler and the boiler setting for permitting thecleaning of said tubes, said means comprising a box-like casting havingan opening, in'the front wall thereof,'and a apart or the insertion of aplurality of walls or partitions spaced to form a passage cleaning tube.

2. The combination with a furnace, a boiler setting, and a boiler, ofmeans interposed between said boiler and boiler setting comprising abody portion having a series of openings therethrough, means for closingsaid openings, and blocks or bricks of'pro tecting material at the innerend of the body portion.

3. The combination witha furnace, of a water tube boiler, a settingtherefor, and

means interposed between the lg 'of' the boiler and the setting, saidmeans comprising a box-like member having a seriesof walls or partitionsf0 'ng openings therethrough.

A. The combination with a steam boiler I furnace, of a water tubeboiler, and aboilersetting, of a body portion interposed be-' tween theleg of the boiler and-the boilerboiler setting.

10 vertically extendingside walls forming pas;

sages, the top of said side walls being-curved or recessed.

In testimony whereofwe aflix our signatures in presence of twowitnesses.

LEWVIS E. HANKISON. \VILL AM E. STUMM.

Witnesses FRANK H. KRUM, J. B. KURTZ.

